Improvement in machines for rolling iron straps



I +1 k 1. 'J'ENSEN'Q Machines for Rolling Iron Straps.

No l57,l3l, Patented Nov.24,1874.

ws NES ES INVENTOR 7 M 9 ATTORNEYS UNITED STATES PATENT OFFICE.

JENS JENsEN, or RA TNE, wIsooNsiN.

IMPROVEMENT IN MACHINES FQRROLLING IRON STRAPS.

v Specification formingpart of Letters Patent No. 157,13 dated November24, 1874 application filed October 17, 1874.

T 0 all whom it may concern:

Be it known that I, JENs JENSEN, of Racine, in the county of Racine andState of Wisconsin, have invented a new and valuable Improvement in aMachine for Rolling Iron Straps; and I do hereby declare that thefollowing is a full, clear, and exact description of the constructionand operation of the same, reference being had to the annexed drawings,making a part of this specification, and to the letters and figures ofreference markedthereon.

Figure 1 of the drawing is a representation of a longitudinal section ofmy machine. Fig. 2 is a front view of the same; and Figs. 3, 4, and 5are detail views, hereinafter referred to.

My invention has relation to means for making boxstraps for wagons; andit consists in the employment, for this purpose, of a rolling-die, whichis recessed to give the proper form to the straps, in combination with asmooth or plain roller, operated bymeans hereinafter explained.

Before describing my machine for rolling the boxstraps referred toabove, I will explain the form of such straps, reference being had toFigs. 3, 4, and 5 of the annexed drawlogs.

The main portion A of the strap presents one flat sideand one convexside, and it is perforated at several points for the reception of screwsfor securing it in its place. The extreme end of the strap, which Ishall term a shank, B, is cylindrical, and is screw-threaded forreceiving a nut. Between this round end and the portion A the strappresents a flat portion, 0, which may be two inches, more or less, inlength. This strap, with the exception of the threads on the roundedportion or shank B, I produce by means of the machine which I shall nowdescribe. A designates the frame of the machine, which consists of twostandards rising from bases and suitably connected together. Bdesignates the dieroller, and G designates the feed and pressing roller.Both of these rollers have their end bearings in journal-boxes appliedin the upper ends of said standards, and both rollers are gearedtogether by means of twin-wheels G G. The die-roller 13 receivesrotation in the direction indicated by the arrow in Fig. 1 from aspur-wheel, E, on a driving-shaft, E, acting through the medium of alarge spurwheel, 0 The driving-shaft E carries on one end a belt-wheel,D, and on the other end a fly or balance wheel, D. The die-roller B hasa recess, a, formed in it, which terminates at one end in an abruptshoulder, 12. This recess is of such a size that it will receive theround bar or blank, out of which the strap in question is formed,without allowing the roller 0 to act on it. The rear portion of therecess a is tapered and increased in breadth and diminished in depth, asindicated by the letter a. This recess 0 forms the flat portion 0 of thestrap, and terminates in a groove, (1, of suitable length, of about thesame depth and of the same width as the groove or recess 0.

This latter groove, d, is concave transversely,

and produces the portion designated in Fig. 3 by the letter A. The tworollers, B 0 impinge on each other, and the roller 0, which is smoothand cylindrical, leaves the upper surfaces of the portions A G flat.

It will be seen from the above description that at each rotation of thetwo rollers I produce a box-strap ready for punching and threading.

What I claim as new, and desire to secure by Letters Patent, is-

The combination, substantially as herein described, of thepressure-roller and (lieroller B, provided with the recesses a c d andshoulder b, as set forth.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

JENS JENSEN.

Witnesses:

CHARLES J. CHIPMAN, JOHN W. J onNsoN.

